Top 10 Global Companies Using JavaScript

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Today no one would question the importance of JavaScript for website and app development. Flexible and lightweight, JS can be used both for the backend and frontend, allows JavaScript developers to deliver the product to customers quickly, and enables incredible speed to anything you develop. As the popularity of JavaScript software development is peaking, so is the demand for JavaScript development services. Let’s take a look at the world’s top companies using JS as well as JavaScript frameworks to maintain of their online platforms.


Facebook has invented its way of using JavaScript and made each Facebook interface a collection of independent JavaScript apps. Meta and Facebook particularly created React, one of the most popular front-end frameworks.  


JavaScript is everywhere in Google’s products: search results, Gmail web client, Google Docs, browser Chrome, etc., all written in JS. Google has an opportunity and resources to develop its JavaScript tools, such as AngularJS, which has become one of the most loved JS frameworks. Moreover, Google is responsible for creating Node JS as the basis for Chrome’s V8 engine. 


Microsoft relied on JavaScript to build Edge web browsers and developed its SJ engine. Besides, Microsoft supports Node on the Azure cloud platform by integrating significant Visual Studio support for Node. They have also developed a version of Node for its IoT applications.  

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PayPal, one of the largest fintech and online payment system leaders, has used Node JS in production almost since the very start. The fact is that they were using Java for the backend at first (just like Netflix did), but then PayPal adopted Node JS for their backend. 


LinkedIn has over 60 million unique users using its mobile applications. The company needed a performing technological solution to perform at such a scale. LinkedIn used Rails for its mobile site, but it was too slow and poorly scalable. LinkedIn switched to NodeJS to solve its scaling problems. The company appreciated two advantages: the scale and the way Node communicates with its platform API and database.


Instagram has entirely used the ReactJS library. A vast number of its features, such as for loading, Geolocations, Google Maps, image, video delivery, uploading, etc., are implemented due to ReactJS.


One of the world’s largest retailers used Java to create an enterprise-grade platform. But then they needed a faster and lighter mobile website version and used JavaScript. After it worked out, Walmart replaced Java with NodeJS.l in other places, too. Among the advantages of the new technical solution, the company names better performance and modularity, allowing the development team to implement changes and fix bugs much faster.


Uber app requires a speedy and scalable technological solution to handle a huge amount of requests. It has to hold loads of data in real-time, as numerous requests are continuously coming. It tracks locations, processes requests and payments, and must do that quickly. These features are now easier to develop and maintain, thanks to Node.js and JavaScript. Node.js ensures fast matching riders and drivers, as well as quick iterations.


It based its tech stack on Java, but a few years ago, it switched to NodeJS to handle an issue with a specific service that Java could not take. So they migrated their entire user face stack to NodeJS. Its developers say that moving to Node.js was a big time saver for the global marketplace.

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Capital One

Capital One is a U.S. bank holding company specializing in credit cards, auto loans, banking, and savings accounts. This large American company has 50 thousand employees on board. Capital One switched to Node.js to ensure its tech stack. As the main benefits of this JavaScript framework, their developers’ team name a significant improvement in response times.


Another fintech company using JavaScript and Node.js is Citibank. It is one of the world’s biggest consumer banks. Citi uses JavaScript-based technologies in its stack to offer clients fast mobile services.

Also, read our article about the top 10 companies known for robust JavaScript development solutions.

Where to Hire a JavaScript Development Company 

We have previously written a series of articles about the biggest front-end hubs and the most popular destinations for outsourcing. Here you can read articles about top JavaScript companies in the UK and the best JS companies in the US and Eastern Europe. We tried to explain how to choose a robust partner for software development abroad and gave several decent examples of such companies.

Whether in-house or outsourcing, JavaScript and its frameworks are among the most popular programming languages used by the top market players today. If you decide to switch to JS for your backend, try hiring a trusted tech partner – JavaScript development company ELITEX, with over eight years of international programming experience. ELITEX is here to boost any of your projects with top-rated coding languages. 

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